Inhaling apparatus.



PATENTED MAY 22,1906.

T. H. GEBAUER.

INHALING APPARATUS.

APPLIUATION FILED AUG. z5. 1905.

ro istering anesthetics,

IFFFW@ i no. senese.

Specification of Lettera Patent.

Patented May 32, 1906.

Application led August 2 5, 1905. Serial No. 275,749.

To all wle/rmt it may con/cern;

Be it known that LTHEOPHIL H. GEBAUER, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in inhaling Apparatus, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings.

My invention relates to devices for adminarticularlv ethyl chlorid, also to devices wl ereby both chloroform or ether may be administered as a sequence to ethyl chlorid. Y

@ne object of the invention is to provide r 5 means whereby the ethyl chlorid may be administered without waste of the same.

A. further object of the invention is to administer the same without causing the patient to inhale the cold va or, the inhalation zo of which frequently resu ts in the patient suffering from an attach of pneumonia after the operation has been performed.

A. further object of the invention is to mix theethyl chlorid with air before the inhalaz 5 tion and to prevent the repeated inhalation of such vapor or of the mixture of such vapor and air.

I have accomplished these results by the apparatus illustrated in the accompanying 3o drawings, wherein- Figure 1 represents a side elevation, partly in section, of an apparatus embodying my invention. Fig. 2 represents aside elevation of the mixer which l employ with the apparatus shown in Fig. 1. Figs. 3 and d represent detail views of the valve which lf employ with the apparatus shown in Fig. 1, and Fig. 5 represents a plan view of a modiiication of the apparatus shown in Fig. 1.

Describingthe parts by reference-numerals, 1 re resents a metallic receptacle for the 'ethy chlorid. Extending from the top `of said receptacle is a metalllic tube 2, commu nication between said receptacle and tube being controlled by means of a needle-valve 3. The tube 2 may be of any desired length, but

is preferably a short tube, as shown in the drawings, with the discharge end ofthe same contracted to form a nozzle 4. This tube car- 5o ries the surrounding casing 5, mounted thereon in any suitable manner, said casing being provided with a number of openings 6 for the admission of air to the interior of the casing. The forward end of the casing is contractedat 5 5 7 approaching, but suitably spaced from,

the end of the nozzle 1. A sleeve 8 surrounds the casing 5 and is provided with openin s 9, adapted to register with the openings 6 ofthe casing. A screw 10, carried by the casing, and a slot 11 inthe sleeve limit the rotation of the sleeve and sustain the same in o erative relation to the casing. The end of) this taA ering ortion 7 is enlarged to receive a tu e 12, o rubber or similar iiexible material, the other end of said tube 12 being connected to a metallic bent tube 13, which is swiveled in the ca 1d of the inhaler. The cap 11i is removab y and telescopically tted on top of the body of the inhaler and is provided with a valve 15. This valve is shown in detail in Figs. 3 and Li and consists of a casing or cage 16, having openings 17 in the vertical wall thereof, the casing being preferably threaded on a short nipple 13, projecting from the upper surface o the cap. The upper end ofthe casing is provided with an inwardly-projecting ledge 19. A perforated disk 20, of mica or other suitable material, rests on the top of the nipple 18.

rlhe mhaler comprises, in addition to the removable cap 14, an upwardly-extending casing 21, on which t e cap 14 is adapted to telescope, and a flaring body portion'22, the open lower end of which 1s sha ed to receive and fit closely over the mout and nose of the patient. The lower edge of the body may be provided with the usual pneumatic cushion. At the junction of the vertical casing 21 and the lower flaring body portion 22 a wire-gauze screen 23 is provided. The casing is also provided with a suitable clamp 24 of ordinary construction, between which and the wire-gauze 23 suitable absorbent gauze or fabric 25 may be inserted.

ln the operation of the device as above described the receptacle is held by the operator and the valve 3 is unscrewed. The warmth of the hand is suflicient to vaporize the ethyl chlorid in the receptacle and the vapor passes throu h valve 3 and tube 2 into the forward end oFthe'contracted portion 7 of the casing. In anesthetizing the patient or first getting him under the influence of the anesthetic the sleeve 8 is set to prevent the flow of air into the casing 5, sufficient air to prevent cyanosis and asphyxiation being admitted at this stage through the perforation 27 in the disk 20. After the patient has been anesthetized a smaller proportion of vapor rela- IGO IOS

tively to the air is required, and the sleeve 8 11o is then set to admit air to mingle with the vapor. A scale may be provided at 26, cooperating with an index 26a, to `indicate the proportion of air which is admitted to the mixture with the vapor. The mixture of vapor and air flows through tube 12 and connection 13 into the space between the top of the cap 14 and the gauze 25. The patient inliales the mixture of vapor and air, said mixture being fui-ther diluted by the air admitted through the perforated disk 20 eX-l haling througi the valve 15, the disk 2() of which vibrates between the nipple 18 and flange 19, permitting the exhalations to pass through the openings 17.

By the construction above described it will be apparent that the vapor is produced at a point remote from the point of inhalation. This is a decided advantage, as when the vapor is produced by spraying the liquid ethyl chlorid against the absorbent gauze or fabric in the inhaler the evaporation takes lace on such gauze or fabric. When this idas continued for some time, frost is formed on the gauze or fabric, with the result that the patient often contracts a severe cold or even pneumonia by the inhalation of the frosty vapors. Furthermore, under these conditions it is impracticable to perform a major operation with ethyl chlorid alone, as the accumulation of frost on the gauze soon closes the meshes thereof, preventing the vapors from passing therethrough to be inlialed by the patient. A further objection to this method of administering ethyl chlorid is that a large proportion of the vapor in the s ace between the cap and wire-gauze is car'- ried away by the exhalations of the patient, making the administration thereof in this manner extremely wasteful. `After the surface of the gauze once becomes sufficiently cool further vaporization of the liquid is prevented by the coolness of the surface. The liquid then accumulates on the gauze, and the exhalations warming the same evaporate it and drive it into the air. Another manner of administering ethyl chlorid is by spraying the liquid into a rubber bag, but without providing the inhaler with a valve for the esca e of exhalations. This results in the reinha at-ion of vapor and air, causing vitiation of the air, and thereby producing a cyanosis and aspkhyxiation of the patient. By my apparatus erein described I am able to obviate the objections noted, and as the vaporization occurs at a point remote from the inhaler and is roduced bythe warmth of the hand I can old a patient under the influence of the anesthetic for a sufficient len th of time to perform a major operation. gWhile it is adapted for a major operation, it is especially useful 1n conpmction with the administering of ether or chloroform as a sequence to ethyl chlprid. It is a well-known fact that the duration and severity of the illness resulting ystruction with that shown in Fig. 1.

from the administration of ether or chloroformtis proportional to the quantity of such anesthetics administered. In the great niajority of operations by far the greater portion of the ether orfrchloroform is administered in order to anesthetize the atient, after which but a comparatively sma quantity of the agent is necessary in order to keep the patient under the infiuence during the performance of the operation. M a paratus may be employed very successfu ly or anesthetizing the atient by the use of a small quantity of ethylpchlorid, after which the cap 14 may be removed and the ether or'chloroform necessary for maintaining the patient under the iniiuence thereof dropping the same on the fabric 25, thereby greatly reducinfr the quantity over that ordinarily employe In Fig. 5 I have shown a modification of the device shown in Fig. 1, wherein a special mixer is dispensed with, and the mixing of the vapor and air takes place entirely within the space between the top of the cap and the fabric 25 and wire-gauze 23. In this figure the short tube 2 is connected directly with the rubber tubing 12, said tubing being connected with the tube 13 which, as in the prior modii'ication, is swiveled to the top of the cap 14. The inhaler in Fig. 5 is identical ip con n operation as the atient inhales air is drawn through the pe oration 27 to mingle with the vapor below the top of the cap. In exhalation the disk operates in the same manner as in the prior modiiication, being driven outwardly against the ledge 19 to permit the exi halations to escape through the openings 17 This form of the invention is especially adapted for minor operations, such as those performed by dentists.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. An inhaler for the administration of anesthetics, `said inhaler having a connection may be administered by.

ICO

ifo 5 IIO for supplying an anesthetic thereto and a valve, said valve comprising a casing having openings in the tory disk within said casing, said disk having a perforation therethrough, and means for supporting said disk on either side of the ipnings in said casing, substantially as -speci- 2. An inhaler for the administration of anesthetics, said inhaler comprising a casing having a removable cap thereon, said cap having a connection for supplyin an anesthetic to the interior of the inhler and a valve, said valve consistin of a casing carried by said cap, said va ve-casing having openings in the Walls thereof and a retainingflan e at the upper end thereof at a point beyon the openings, and a perforated disk side walls thereof, a vibra-y within said casing, substantially as specified.

3. An apparatus for administering anesthetios comprising in combination a Vaporizing-receptacle, an inhaler, a duet extending between said receptacle and inhaler, a mixer in said duct havin means for admitting air in definite and regu able proportions thereto,

and a valve in said inhaler, said valve havin means for admitting a limited amount o fluid to the inhaler and means for automatioally permitting the escape of a large quanitf of fluid therefrom, substantially as speci- 4. An apparatus for administering anesthetics comprising in combination a Vaporizing-receptacle, an inhaler, and a duct extenda vibratin disk in said casing, said disk being peroratedg, substantially as specied.

5. An inhaler for administering anesthetics, comprising a casing having an inlet for the anesthetics and a valve through which exhalations may escape, said valve being provided With means Jfor admitting air to mingle with the anesthetic in the casing, substantially as specified.

6. An inhaler for administering anesthetics, comprising a casing having an inlet Jfor anesthetics and a valve, said valve having a restricted inlet for the admission of air tp be inhaled and a Jfree outlet for the exhalations substantially as specified.

In testimony Whereoi` I affix my signature in the presence of two Witnesses.

THEOPHIL H. GEBAUER.

Witnesses: i

J. B. HULL, B. W. BROCKETT. 

